Question map
Consider the following fauna : 1. Lion-tailed Macaque 2. Malabar Civet 3. Sambar Deer How many of the above are generally nocturnal or most active after sunset?
Explanation
The correct answer is Option 1 (Only one). Among the given fauna, only the Malabar Civet is strictly nocturnal.
- Malabar Civet: It is a critically endangered mammal endemic to the Western Ghats. It is strictly nocturnal and secretive in nature, being most active after sunset.
- Lion-tailed Macaque: Unlike most primates, this endemic species is diurnal, meaning it is active exclusively during daylight hours for foraging and social interaction.
- Sambar Deer: While the Sambar can exhibit crepuscular behavior (active at dawn and dusk) to avoid predators or human disturbance, it is biologically classified as diurnal or cathemeral. It is not categorized as a "nocturnal" animal in the same sense as the Civet.
Therefore, since only the Malabar Civet fits the specific criteria of being generally nocturnal, Option 1 is the most accurate choice for this UPSC-style classification.
PROVENANCE & STUDY PATTERN
Guest previewThis question marks a shift from 'Where is it found?' (Location/IUCN) to 'How does it live?' (Behavior). While the Malabar Civet is a direct textbook hit (Shankar IAS), the Lion-tailed Macaque requires applying basic primate logic (monkeys are visual, hence diurnal), and the Sambar Deer tests observational common sense about prey animals.
This question can be broken into the following sub-statements. Tap a statement sentence to jump into its detailed analysis.
- Directly states the activity pattern of the species.
- Specifies that the lion-tailed macaque is active during the day (diurnal), which contradicts being nocturnal or primarily active after sunset.
- Explicitly identifies the lion-tailed macaque as diurnal.
- Clarifies that it is most active during daytime rather than after sunset.
Gives a clear definition/example of a nocturnal mammal (bats) and describes behavioural markers used to label species as nocturnal (feed at night, sleep by day).
A student could use this rule (night-feeding / day-sleeping = nocturnal) to check field accounts of lion-tailed macaque activity patterns and decide if they fit this nocturnal pattern.
Identifies another Western Ghats mammal (Malabar civet) explicitly described as nocturnal, showing that nocturnality is a noted trait for some species in the same biogeographic region.
A student could map species of the Western Ghats (including lion-tailed macaque) and compare documented activity times for regional mammals to see if nocturnality is common or exceptional.
Lists the lion-tailed macaque among 'unique animals of India' (a primate), which links it taxonomically to other primates discussed elsewhere in the snippets.
A student could use basic outside knowledge about typical primate activity patterns (many primates are diurnal) and then look for specific behavioural notes on lion-tailed macaque to test whether it matches the common primate pattern or is an exception.
Shows the lion-tailed macaque is a Schedule I protected species (highlighting its prominence), implying it is well-studied and that behavioural descriptors (e.g., diurnal/nocturnal) are likely recorded in authoritative sources.
A student could therefore consult protected-species accounts or conservation reports (using the schedule listing as a cue) to find direct behavioural data on activity periods.
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